Modular Unified Business Suite

Problem Statement

Modern organizations rely on multiple systems to handle core operations like customer relationship management, document processing, and commerce. However, these systems are often deployed as monoliths or tightly coupled platforms, which restricts flexibility, innovation, and interoperability.

This project explores combining three powerful open-source platforms—Twenty CRM, Documenso, and Medusa—into a modular, plug-and-play business suite. Each system remains fully independent and composable, enabling tailored deployment while still offering full end-to-end integration when needed.

Objective

Create a modular business infrastructure where:

Each core system can function independently.
Any combination of the systems can be used together seamlessly.
Organizations can plug in new tools without disruption.

Proposed Solution

Twenty CRM

Purpose: Sales pipeline and customer management
Role: Source of truth for contacts, leads, and deals
Integration: Publishes events like deal.closed, contact.created

Documenso

Purpose: Document handling and digital signatures
Role: Manages contracts and legal workflows
Integration: Listens to CRM events, sends documents, notifies on signature completion

Medusa

Purpose: Headless commerce and payment infrastructure
Role: Manages orders, inventory, and checkout
Integration: Can be triggered by signed contracts or CRM orders

Key Benefits

For Businesses

Use only what you need—CRM, e-signature, or commerce—without the overhead of the rest.
Any module can be swapped with an alternative with minimal changes.
Services scale independently based on usage patterns.

For Developers

Focus on isolated concerns without breaking dependencies across systems.
Failures in one module do not cascade to others—faults are contained.
Clear APIs and event-driven patterns simplify integration work.

Core Features

API-First Design: Each service exposes clean, versioned APIs.
Event-Driven Communication: Services communicate via publish/subscribe patterns (e.g., Kafka or Redis Streams).
Auth-Integrated: OAuth2/OpenID for cross-service identity and access control.
Composable Architecture: No hard dependencies between services—each can be deployed in isolation.

Technical Overview

Architecture: Event-driven microservices with API gateway
Approach: Composable, plug-and-play modules with no hard dependencies
Key Integrations: Twenty CRM, Documenso e-signatures, Medusa commerce

Integration Example

A deal is closed in Twenty CRM.
This triggers Documenso to send a contract to the client.
Once signed, the event triggers Medusa to initiate a fulfillment process.
Each system logs its activity independently but can also push to a shared dashboard.

Implementation Approach

Phase 1 - Research: Evaluate Twenty CRM, Documenso, and Medusa APIs. Design event schemas and integration contracts.
Phase 2 - Core Integration: Build event bus infrastructure. Implement basic CRM → Document → Commerce flow.
Phase 3 - Testing: Internal adoption of modules as standalone tools. Test event-driven integrations in real business flows.
Phase 4 - Documentation: Create shared developer tooling, including SDKs and documentation. Publish integration guides.

Challenges & Mitigations

Challenge	Mitigation
Data consistency	Strict schema contracts for aligning customer/transaction data
Orchestration complexity	Well-designed event bus and API gateway to manage glue logic
Security management	Unified auth strategy for token sharing and cross-service permissions
UX cohesion	Optional frontend layer for a unified user interface

Success Metrics

Successful end-to-end flow completion rate (CRM → Document → Commerce)
Module uptime and independent scalability metrics
Developer time-to-integrate for each module
Number of organizations adopting the suite

Future Opportunities

Publicly available modular suite for startups and enterprises.
A growing library of compatible plugins and adapters.
Optional hosted version for managed deployment.
Expand to additional modules (inventory, HR, support ticketing).

Unified Payment Gateway - Could integrate with Medusa for Guinea-specific payment methods
Unified Digital Identity - Could provide SSO across all suite modules

Get Involved

A modular, plug-and-play platform using Twenty CRM, Documenso, and Medusa creates a flexible foundation for digital business operations. This architecture supports both focused deployments and unified workflows, enabling businesses to evolve their systems as they grow—without getting locked into rigid platforms.

If you’re interested in building adaptable business software ecosystems, let’s connect and explore how to bring this vision to life.